Ventilator.



PATENTED NOV. 19, 1907.

No. 871,146. J. c. ROTH a. J. J. WBLSHQFBR.

VENTILATOR.

APPLICATION FILED MAR. s, 190s.

` z SHEETS-SHEET 1.

No. 871,146. PATNTED NOV. 19, 1907. J. C. ROTH & J. J. WELSHOFER.

VBNTILATOR.

APPLICATION FILED MAR. B, 1906.

2 SHEETS-SHEET z.

gd/W47 lI gyywf@ TNS NoRRls PETERS co., wAsHmaroN. D. c.

UNITED STATES PATENT -oEEIoE JOSEPH C. ROTH, OF WEST SENECA, AND JOHN J. WELSHOFER, OF BUFFALO, NEW YORK.

VENTILATOR.

yNo. 871,146.

Specification of Letters Patent.

Patented Nov. 19, 1907.

Application tiled March 8, 1906. Serial No. 304,869.

To all whom it may concern:

Be it known that we, JOSEPH O. ROTH, a citizen of the United States, residing at Vest Seneca, and JOHN J. IVELsnoFEn, a citizen of the United States, residing at Buffalo, both in the county of Erie and State of New York, have invented a new and useful Improvement in Ventilators, of which the :following is tional elevation of a modified construction of the device. Fig. 6 is a front view of the same.

Similar letters of reference indicate corresponding parts throughout the several views.

A indicates the horizontal shell or casing of the ventilator which is preferably tapered toward its open rear end and provided at that end with a vane B of any suitable form. On its under side between its ends the casing is provided with a depending hollow neck or tube C rigidly secured thereto and opening at its upper end into the bottom of the casing. This neck has a telescopic connection with a fixed upright pipe D upon which it is free to turn, the neck fitting over the 'fixed pipe in the construction shown in the drawings. When they ventilator is used on a railway car, the pipe D is secured in an opening in the car roof and connected at its lower ond to a suitable ventil ating pipe or flue not shown, which may be arranged lengthwise in the car under the r'oof and provided at intervals with openings by which it communicates with the interior of the car.

E is an open-ended tube arranged lengthwise within the casing A and preferably tapered or constructed in the form of a truncated cone having a flared front end e which is secured in the adjacent end of the casing by soldering or otherwise, while its small rear 'end extends to or somewhat beyond the rear side of the neck O. The large end of the tube Eis tightly fitted in the casing, but the remaining portion thereof is separated from the casing by an intervening annular space.

The casing and the tube E are rotatably supported by an upright shaft or spindle F secured in horizontal frames or bridge pieces F fastened within the fixed pipe D. The upper portion of the spindle passes loosely through openings in the top and bottom of the conical tube and through an upright sleeve G secured within said tube in line with said openings, the casing being provided in its top with an internal bearing plate h preferably of glass or other antifrictlon material which rests upon the upper end of the spindle. This bearing plate may be secured to the casing by a cap 71, having an opening for the passage of the spindle, as best shown in Fig. 3, or by any other suitable means. By this construction, therotary head or casing of the ventilator is iirmly steadied on the 'fixed pipe D and at the same time capable of turning freely owing to the comparatively small contact between the casing and the top of the spindle.

I is a conical spreader or deflector arranged axially within the tapering tube E with its pointed end facing the front end of the ventilator and serving to direct the incoming air current outwardly toward the wall of said tube, so as to exert thc exhaustingellect of the current closely to the upper end of the neck C and produce a vigorous draft or circulation through the same and thc Ventilating liuc connected therewith. The spreader is rigidly secured. to the sleeve G which passes through it, and its large rear end is separated from the surrounding tube by a space of sufficient width to leave a proper passage for the air current. The sleeve G, while acting as a support for the spreader, also serves as a guard or shield` which prevents water from leaking through the shaft-opening in the bottom of the tube E into the upright pipe D.

In the use of the ventilator, the air current entering the mouth of the tapering tube E is dellected outwardly by the spreader I, as hereinbefore described, producing a strong suction at the upper end of the neck C, whereby the air is exhausted from the latter and the railway car or compartment connected therewith. To improve this ventilating action, the spreader I is preferably hollow and open at its rear end and its interior is connected with the space between the casing and the tapering tube E by radial Ilues or pipes J, as shown in Figs. l and 2.

By this construction, the air current passing through the tube E also produces a partial vacuum at the large end of the spreader which causes the air in the neck C to be exhausted partly through the spreader and the 'l'lues J, especially those flues on the lower side of the spreader. These flues also serve to braoe the spreader. Vhile we prefer to use the flues J, they are not indispensable and may be omitted, if desired. Such a modified construction of the invention is shown in Figs. 5 and 6. In this case, the flues may be replaced by suitable braces 7c and the rear end of the spreader may be closed, as shown at l.

In order to prevent any water which may enter the casing from flowing into the neck C, the opening in the bottom ofthe casing which'registers with the neck is preferably provided with an upwardly extending rim or guard m, and the casing is provided in its bottom on the outer side of the guard with a number of drain openings n for the escape of such water.

We claim as our invention:-

l. A ventilator ycomprising a casing having a neck or passage at its lower side, an open ended tube arranged lengthwise in the casing and extending across said neck or passage, a portion of said tube being separated from the surrounding casing, a hollow spreading cone arranged axially in said tube and open at its rear end, and a ilue or iiues connecting the interior of said cone with the space between said tube and the casing, substantially as set forth.

2. A ventilator comprising a shaft, a rotary casing mounted on the shaft and provided at its lower side with a neck or passage, an open-ended tube arranged lengthwise in the casing, an upright sleeve secured within said tube around the shaft, and a spreader arranged in said tube and secured upon said sleeve, substantially as set forth.

3. A ventilator, comprising a casing lhaving a neck or passage at its lower side, a

raised guard rim arranged in the casing at the upper end of said neck and a drain opening in the bottom of the casing, and an openended tube arranged lengthwise in the casing and extending across said neck or passage, substantially as set forth.

Witness our hands this 1st day of March, 1906.

JOSEPH C. ROTH.

JOHN J. WELSHOFER.

itnesses :L'

C. F. EYER, E. M. GRAHAM. 

